1 /* conf_api.c */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 /* Part of the code in here was originally in conf.c, which is now removed */ 60 61 #ifndef CONF_DEBUG 62 # undef NDEBUG /* avoid conflicting definitions */ 63 # define NDEBUG 64 #endif 65 66 #include <assert.h> 67 #include <string.h> 68 #include <openssl/conf.h> 69 #include <openssl/conf_api.h> 70 71 static void value_free_hash(CONF_VALUE *a, LHASH *conf); 72 static void value_free_stack(CONF_VALUE *a,LHASH *conf); 73 static unsigned long hash(CONF_VALUE *v); 74 static int cmp_conf(CONF_VALUE *a,CONF_VALUE *b); 75 76 /* Up until OpenSSL 0.9.5a, this was get_section */ 77 CONF_VALUE *_CONF_get_section(CONF *conf, char *section) 78 { 79 CONF_VALUE *v,vv; 80 81 if ((conf == NULL) || (section == NULL)) return(NULL); 82 vv.name=NULL; 83 vv.section=section; 84 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 85 return(v); 86 } 87 88 /* Up until OpenSSL 0.9.5a, this was CONF_get_section */ 89 STACK_OF(CONF_VALUE) *_CONF_get_section_values(CONF *conf, char *section) 90 { 91 CONF_VALUE *v; 92 93 v=_CONF_get_section(conf,section); 94 if (v != NULL) 95 return((STACK_OF(CONF_VALUE) *)v->value); 96 else 97 return(NULL); 98 } 99 100 int _CONF_add_string(CONF *conf, CONF_VALUE *section, CONF_VALUE *value) 101 { 102 CONF_VALUE *v = NULL; 103 STACK_OF(CONF_VALUE) *ts; 104 105 ts = (STACK_OF(CONF_VALUE) *)section->value; 106 107 value->section=section->section; 108 if (!sk_CONF_VALUE_push(ts,value)) 109 { 110 return 0; 111 } 112 113 v = (CONF_VALUE *)lh_insert(conf->data, value); 114 if (v != NULL) 115 { 116 sk_CONF_VALUE_delete_ptr(ts,v); 117 OPENSSL_free(v->name); 118 OPENSSL_free(v->value); 119 OPENSSL_free(v); 120 } 121 return 1; 122 } 123 124 char *_CONF_get_string(CONF *conf, char *section, char *name) 125 { 126 CONF_VALUE *v,vv; 127 char *p; 128 129 if (name == NULL) return(NULL); 130 if (conf != NULL) 131 { 132 if (section != NULL) 133 { 134 vv.name=name; 135 vv.section=section; 136 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 137 if (v != NULL) return(v->value); 138 if (strcmp(section,"ENV") == 0) 139 { 140 p=Getenv(name); 141 if (p != NULL) return(p); 142 } 143 } 144 vv.section="default"; 145 vv.name=name; 146 v=(CONF_VALUE *)lh_retrieve(conf->data,&vv); 147 if (v != NULL) 148 return(v->value); 149 else 150 return(NULL); 151 } 152 else 153 return(Getenv(name)); 154 } 155 156 long _CONF_get_number(CONF *conf, char *section, char *name) 157 { 158 char *str; 159 long ret=0; 160 161 str=_CONF_get_string(conf,section,name); 162 if (str == NULL) return(0); 163 for (;;) 164 { 165 if (conf->meth->is_number(conf, *str)) 166 ret=ret*10+conf->meth->to_int(conf, *str); 167 else 168 return(ret); 169 str++; 170 } 171 } 172 173 int _CONF_new_data(CONF *conf) 174 { 175 if (conf == NULL) 176 { 177 return 0; 178 } 179 if (conf->data == NULL) 180 if ((conf->data = lh_new(hash,cmp_conf)) == NULL) 181 { 182 return 0; 183 } 184 return 1; 185 } 186 187 void _CONF_free_data(CONF *conf) 188 { 189 if (conf == NULL || conf->data == NULL) return; 190 191 conf->data->down_load=0; /* evil thing to make sure the 'OPENSSL_free()' 192 * works as expected */ 193 lh_doall_arg(conf->data,(void (*)())value_free_hash,conf->data); 194 195 /* We now have only 'section' entries in the hash table. 196 * Due to problems with */ 197 198 lh_doall_arg(conf->data,(void (*)())value_free_stack,conf->data); 199 lh_free(conf->data); 200 } 201 202 static void value_free_hash(CONF_VALUE *a, LHASH *conf) 203 { 204 if (a->name != NULL) 205 { 206 a=(CONF_VALUE *)lh_delete(conf,a); 207 } 208 } 209 210 static void value_free_stack(CONF_VALUE *a, LHASH *conf) 211 { 212 CONF_VALUE *vv; 213 STACK *sk; 214 int i; 215 216 if (a->name != NULL) return; 217 218 sk=(STACK *)a->value; 219 for (i=sk_num(sk)-1; i>=0; i--) 220 { 221 vv=(CONF_VALUE *)sk_value(sk,i); 222 OPENSSL_free(vv->value); 223 OPENSSL_free(vv->name); 224 OPENSSL_free(vv); 225 } 226 if (sk != NULL) sk_free(sk); 227 OPENSSL_free(a->section); 228 OPENSSL_free(a); 229 } 230 231 static unsigned long hash(CONF_VALUE *v) 232 { 233 return((lh_strhash(v->section)<<2)^lh_strhash(v->name)); 234 } 235 236 static int cmp_conf(CONF_VALUE *a, CONF_VALUE *b) 237 { 238 int i; 239 240 if (a->section != b->section) 241 { 242 i=strcmp(a->section,b->section); 243 if (i) return(i); 244 } 245 246 if ((a->name != NULL) && (b->name != NULL)) 247 { 248 i=strcmp(a->name,b->name); 249 return(i); 250 } 251 else if (a->name == b->name) 252 return(0); 253 else 254 return((a->name == NULL)?-1:1); 255 } 256 257 /* Up until OpenSSL 0.9.5a, this was new_section */ 258 CONF_VALUE *_CONF_new_section(CONF *conf, char *section) 259 { 260 STACK *sk=NULL; 261 int ok=0,i; 262 CONF_VALUE *v=NULL,*vv; 263 264 if ((sk=sk_new_null()) == NULL) 265 goto err; 266 if ((v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))) == NULL) 267 goto err; 268 i=strlen(section)+1; 269 if ((v->section=(char *)OPENSSL_malloc(i)) == NULL) 270 goto err; 271 272 memcpy(v->section,section,i); 273 v->name=NULL; 274 v->value=(char *)sk; 275 276 vv=(CONF_VALUE *)lh_insert(conf->data,v); 277 assert(vv == NULL); 278 ok=1; 279 err: 280 if (!ok) 281 { 282 if (sk != NULL) sk_free(sk); 283 if (v != NULL) OPENSSL_free(v); 284 v=NULL; 285 } 286 return(v); 287 } 288 289 IMPLEMENT_STACK_OF(CONF_VALUE) 290